Equivalent of [[NSWorkspace sharedWorkspace] runningApplications] for iphone / iOS?

I've been poring through Apple documentation for some time now but haven't found an iOS equivalent of the sharedWorkspace object that one can get from NSWorkspace in AppKit. Basically, I just want the runningApplications method from it.

Can anyone point me in开发者_JS百科 the right direction?

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There is no such method or analogue. This information is "off limits" on iOS.